Thanks for your question.
To worshiip God in spirit and in truth you must first understand what He wants. You can only get this information from the Bible. Worshipping God "in Spirit" involves implenting what you learn from His word in your life. Jesus said, "you are my friends if you do what I command you." [John 15:14 ESV].
Here is some useful information from the website:
I hope you have found this helpful.